Apache Ant Javac Task

Ant Javac task is used to compile Java source file. It scans source and destination directory to compile the source file. It only compiles if either .class is not present or .class is older than Java file.

If the Java source file is located into any package, source file should have directory hierarchy.

Apache Ant Javac Attributes

Attribute	Description	Required
srcdir	Source Java file.	Yes
destdir	Destination to store the class files.	No
includes	A list of patterns of files that must be included.	No
includesfile	Each line of this file is taken to be an include pattern.	No
excludes	A list of patterns of files that must be excluded.	No; defaults to default excludes or none if defaultexcludes is no
excludesfile	Each line of this file is taken to be an exclude pattern.	No
classpath	The classpath to use.	No
bootclasspath	Path of bootstrap class files.	No
extdirs	Path of installed extensions.	No
encoding	Encoding of source files.	No
nowarn	It is used to pass -nowarn switch to the compiler.	No
debug	To debug file during compilation.	No
debuglevel	Set level of debug file.	No
optimize	Indicates whether source should be compiled with optimization.	No
deprecation	Compile with with deprecation information.	No
verbose	Asks the compiler for verbose output.	No
depend	Enables dependency tracking for compilers that support it.	No
includeAntRuntime	Whether to include the Ant run-time libraries in the classpath or not.	No
fork	Whether to execute javac using the JDK compiler externally or not.	No
executable	Complete path to the javac executable.	No
memoryInitialSize	Set initial memory size.	No
memoryMaximumSize	The maximum size of the memory for the underlying JVM.	No

Apache Ant Javac Example

The following code compiles a Java source file and store class file into destination directory.

// build.xml

<project name="java-ant project" default="compile">	
	<target name="compile">
		<javac includeantruntime="false" srcdir="./src" destdir = "test"></javac>
	</target>
</project>

Example: Setting debug mode true

This example will compile all Java source file located into srcdir and store .class into destdir directory. It will compile Java source in debug mode because the debug mode is on.

<project name="java-ant project" default="run">	
	<target name="run">
		<javac srcdir="${src}" destdir="${build}"
       			classpath="xyz.jar" debug="on" source="1.4"/>
    </target>
</project>

Example : Setting source level and target version

This example will compile all Java source file located into srcdir and store .class into destdir directory. The source level is 1.8 and the .class file will run under Jdk 1.8.

<project name="java-ant project" default="run">	
	<target name="run">
		<javac srcdir="${src}" destdir="${build}"
       			classpath="xyz.jar" fork="true" source="1.8" target="1.8"/>
    </target>
</project>

Next TopicApache Ant Length Task

← prev next →

For Videos Join Our Youtube Channel: Join Now

Feedback

Send your Feedback to [email protected]

Help Others, Please Share

Learn Latest Tutorials

Splunk

SPSS

Swagger

Transact-SQL

Tumblr

ReactJS

Regex

Reinforcement Learning

R Programming

RxJS

React Native

Python Design Patterns

Python Pillow

Python Turtle

Keras

Preparation

Aptitude

Reasoning

Verbal Ability

Interview Questions

Company Questions

Trending Technologies

Artificial Intelligence

AWS

Selenium

Cloud Computing

Hadoop

ReactJS

Data Science

Angular 7

Blockchain

Git

Machine Learning

DevOps

B.Tech / MCA

DBMS

Data Structures

DAA

Operating System

Computer Network

Compiler Design

Computer Organization

Discrete Mathematics

Ethical Hacking

Computer Graphics

Software Engineering

Web Technology

Cyber Security

Automata

C Programming

C++

Java

.Net

Python

Programs

Control System

Data Mining

Data Warehouse

Javatpoint Services

JavaTpoint offers too many high quality services. Mail us on [email protected], to get more information about given services.

Website Designing
Website Development
Java Development
PHP Development
WordPress
Graphic Designing
Logo
Digital Marketing
On Page and Off Page SEO
PPC
Content Development
Corporate Training
Classroom and Online Training
Data Entry

Training For College Campus

JavaTpoint offers college campus training on Core Java, Advance Java, .Net, Android, Hadoop, PHP, Web Technology and Python. Please mail your requirement at [email protected]
Duration: 1 week to 2 week

^{Like/Subscribe us for latest updates or newsletter}